JPS6348650A - Horizontal pulling-in mechanism in loading device for magnetic recording medium - Google Patents

Abstract

PURPOSE:To simplify the operation by allowing a loading detection sensor to detect it in loading the tip of a magnetic recording medium to a holder so as to apply automatic pulling-in and allowing a pulling-in end sensing roller to activate the loading mechanism of the holder after the loading is finished. CONSTITUTION:In loading a magnetic recording medium 10, a loading detection roller 55 is depressed to turn a roller base 48. Then a pulling-in roller 50 is pressed into contact with a jacket of the magnetic recording medium 10 and a pulling-in switch 56 energizes a drive motor, then a roller drive shaft 43 is driven. When the magnetic recording medium 10 is pulled in to a prescribed position in the holder 40, the engagement between the pulling-in end detection roller 64 and the magnetic recording medium 10 is released. As a result, a clutch lever 61 is turned by a spring means (not shown) around a shaft 62 and its clutch gear 65 meshes with an idle gear 58 and a cam plate drive gear 59 to start the loading.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a loading device for a magnetic recording medium of a magnetic recording/reproducing device, and particularly to a horizontal retracting mechanism thereof.

"Prior art and its problems" In magnetic recording and reproducing devices used in electronic still cameras, etc., a disk-shaped rotating recording medium (such as a magnetic sheet) is placed inside a jacket.
A magnetic recording medium containing a magnetic disk (magnetic disk) is used. This magnetic recording medium needs to be loaded into its drive motor during recording and playback, but conventional loading devices (to which the magnetic recording medium is inserted and removed) are simply moved up and down relative to the drive motor. The medium is mounted with part of it exposed from the magnetic recording/reproducing device.Therefore, there is a possibility that tattle may be applied to the magnetic recording medium during recording/reproducing, which may result in the inability to perform recording/reproduction or damage to the medium. Ta.

6 and 7 show conventionally used loading devices. The magnetic recording medium]O consists of a rectangular jacket 11 and a magnetic disk 12 housed within the jacket 1.The jacket 11 has a central hub 3 of the magnetic disk 12 exposed at its center. A central hole 14 is formed, and a magnetic head entrance hole 15 (see FIG. 8) and a pad entrance hole 16 are formed on the front and back sides of a part of the periphery thereof.

For loading equipment, attach the hub 13 of the magnetic recording medium]0 to the spindle motor (drive motor), insert the magnetic head into the magnetic head entry hole 15, and insert the magnetic head into the pad entry hole]6.
The magnetic recording medium 10 is inserted between the left and right fixing plates 21 fixed to the base 20.
It supports a holder 22 into which the pad is inserted and a pad mounting plate 23. The holder 22 and the butt mounting plate 23 each have rollers 24.25 on their sides, and either the rollers 24.25 or the vertical guide grooves 26.25 formed in the fixing plate 21.
27 respectively. The butt mounting plate 23 also has a pad 28 at a position corresponding to the pad entry hole 16 of the magnetic recording medium 10 correctly inserted into the holder 22.

This pad 28 can enter into the holder 22 through a hole (not shown) made in the holder 22.

A cam plate 29 that is movable in the direction of the arrow in the figure runs along the fixed plate 21, and the rollers 24 and 25 move along this cam plate 29.
It also fits into the cam grooves 30 and 31 formed at the same time.

The cam grooves 30 and 31 have upper and lower flat parts 30a and 30, respectively.
b, 3 i a, 31b, and the inclined part 3 that connects them
It has 0c and 31c. The cam plate 29 has a rack 29a at its lower end that engages with the drive gear 32, and when the drive gear 32 rotates forward and backward, it reciprocates in the direction of the arrow in the figure. 33 and 34 are long grooves and pins that regulate the moving direction and range of the cam plate 29.

Therefore, in this conventional device, when the cam plate 29 is moved to the right in FIG.
．． The rollers 24 and 25 are fitted into the flat parts 30a and 3ia of 31, respectively, and the holder 22 and the pad mounting plate 23 are moved to the ascending position M (ascending position). In this state, when the magnetic recording medium 10 is inserted into the holder 22 and brought into contact with the stopper 22a, the cam plate 29 is moved to the left in the figure by the drive gear 32, and the roller 24.2 is moved to the left in the figure.
5 is an inclined FA part 30c, 31 from the flat part 30a, 31a.
C, the holder 22 and the bad mounting plate 23 descend vertically according to the vertical guide grooves 26.27. When the rollers 24.25 reach the flat parts 30b and 3Fb, the descent stops and this state , the pad mounting plate 23
The magnetic recording medium 10 is inserted into the magnetic recording medium 10 through the magnetic recording medium 10 through the magnetic head 35.
The hub 13 at the center of the magnetic disk 12 is mounted on a spindle motor 36 (see FIG. 8). This is the loading state. The transition from the loading state to the unloading state is performed by the reverse operation described above.

However, in the conventional apparatuses described above, the insertion of the magnetic recording medium 10 into the holder 22 must be performed by the operator.

This makes operation difficult, and if the holder 22 is lowered toward the base 20 while it is not fully inserted or fully inserted, the magnetic recording medium 1o may interfere with the fixed part of the device and be damaged. There was a risk. Further, because of its structure, it cannot be retracted horizontally, so when it is installed, a portion of the recording medium is exposed from the recording/reproducing frame.

``Object of the Invention J The present invention solves the problems of the conventional loading device, and when the leading end of a magnetic recording medium is inserted into a holder, it can be automatically pulled in the direction of its plane. The purpose is to obtain a horizontal retraction mechanism for loading fiM.

"Summary of the Invention" The present invention provides an insertion detection sensor that detects that the leading end of a magnetic recording medium is inserted near the asilating state position of a holder into which the magnetic recording medium is inserted, and this insertion detection sensor. When the recording medium is detected to be inserted, a retraction roller contacts the jacket of the recording medium and sends it into the back of the holder, and when the retraction is completed, the retraction roller senses this and operates the loading mechanism of the holder. It is characterized by being equipped with a retraction completion sensor.

"Embodiments of the Invention" The present invention will be described below with reference to illustrated embodiments. 1 to 5 show an embodiment of the present invention, in which the holder 40 has a flat rectangular cylindrical shape with one end as an insertion opening 40a for the magnetic recording medium 10, and a base on which a spindle motor is fixed. It is supported so that it can be raised and lowered. As in the conventional example, the spindle motor is provided at a position where it engages with the hub] 3 of the magnetic disk 12 of the magnetic recording medium 10 correctly inserted into the holder 40.

Fixed frames 42 fixed to the base are located on the left and right sides of the holder 40, and a roller drive shaft 43 and a cam plate drive shaft 44, which are parallel to each other, are rotatably supported between the fixed frames 42. . A drive gear 45 provided at one end of the roller drive shaft 43 meshes with a gear directly connected to a drive motor 46 fixed to one fixed frame 42, and is rotationally driven by the drive motor 46.

The roller drive shaft 43 has a roller base 4 approximately in the center thereof.
8 is rotatably supported. This roller base 48
A stopper hole 49 is formed through the cam plate drive shaft 44, and the rotation range 171 of the roller base 48 is regulated by the effective length of the stopper hole 49. This roller base 48 is urged to rotate clockwise in FIG. 1 by a spring means (not shown).

On this roller base 48, a shaft 51 is rotatably supported (supported by the shaft 51), which is positioned at the insertion opening 40a and 1j of the holder 40 in the retracting state, and has a pull-in roller 50 at one end.
A roller gear 52 is integrally provided at the other end of this shaft 51. This roller clamp 52 is connected to the roller drive shaft 4
When the roller drive shaft 43 rotates, this retraction roller 50 rotates via the roller drive gear 54 and the roller chisel 52. Further, an insertion lateral pressure roller (insertion detection sensor) 55 that is pushed by the inner part of the roller base 48 (this is the jacket of the magnetic recording medium 10 inserted into the holder 40) 1 is supported. When this insertion detection roller 55 is pushed by the magnetic recording medium 10, it rotates counterclockwise in FIG. 56 is a pull-in switch that is turned on when the roller base 48 is rotated counterclockwise as described above and drives the drive motor 46.

The roller drive shaft 43 is also provided with an idle gear 58 at the end on the fixed frame 42 side opposite to the drive motor 46, and the cam plate drive shaft 44 is provided with a cam plate drive chisel 59 adjacent to the idle gear 58. I'm here. The other left and right fixed frames 4
2 are rotatably supported by clutch levers 6 and shafts 62, respectively. The left and right clutch levers 61 are connected by a connecting bar 63 at the end of the holder 40 on the insertion opening 40a side, and the jacket of the magnetic recording medium 10 inserted into the insertion opening 40a is connected to the connecting bar 63.]
Retraction completion detection roller (retraction completion sensor) 6 that engages and disengages from 1
4 is supported. A clutch gear 65 is supported at the other end of the clutch lever 61 and can be engaged with the idle gear 58 and the cam plate drive gear 59 at the same time. When the clutch lever 61 is activated, it is urged to rotate in a direction in which it engages with the clutch gear 65, the idle gear 58, and the cam plate drive gear 59.

Furthermore, the five cam plate drive gears are the loading cam plate 6.
It is engaged with the rack 69 of No. 8. This loading cam plate 68 is supported horizontally movably on a base, and a loading roller 72 protruding from a vertical moving body 71 is fitted into a cam groove 70 of the loading cam plate 68 . Holder 40
is engaged with a vertical guide groove 73 formed in this vertically movable body 71 via a roller 74, and when the vertically movable body 71 goes up and down, it (either goes up and down along with it or the lower end of the holder 40). In the regulated state, the vertical movable body 7 can be lowered as high as possible. 75 is a bat mounting plate, and 76 is a bat that enters from the bat entry hole 16 of the magnetic recording medium 10.

The cam groove 70f, the lower horizontal portion 70a that holds the vertical moving body 77 and the holder 40 in the upper unloading position
, an inclined portion 70b for shifting from the afro-ding position to the low-jig position, and a lower horizontal portion 70C for holding the low-jig position.

The Motokihira retraction device having the above structure operates as follows. The insertion opening 40a of the holder 40 (when the magnetic recording medium 10 is inserted, the retraction completion detection roller 64 is pushed away, thereby the clutch lever 6) rotates clockwise in FIG.
The clutch lever 65 is disengaged from the idle gear 58 and the cam plate drive gear 59. When the magnetic recording medium 10 is further inserted, the insertion detection roller 55 is pushed and the roller drive shaft 48 rotates counterclockwise in FIG. Then, at the same time as the retracting roller 50 comes into contact with the jacket 1 of the magnetic recording medium 10, the retracting switch 56 and the drive motor 46 are turned on, so that the roller drive shaft 43 is rotationally driven.

When the roller drive shaft 43 is rotationally driven, the shaft 5 ] and the pull-in roller 5 o rotate due to the engagement between the roller drive gear 54 and the roller gear 52 , and the jacket 1 ] ( which is in frictional contact with the pull-in roller 50 ) rotates. The magnetic recording medium 10) is in the holder 4
Drawn into 0. When the magnetic recording medium 10 is pulled into a predetermined position in the holder 40, the retraction completion detection roller 6
4 and the magnetic recording medium 10, and as a result, the clutch lever 61 is moved by a spring means (not shown) to the shaft 6.
2 in the counterclockwise direction in FIG.

Then, the rotation of the drive shaft 43 during rotation is transmitted to the cam plate drive hook 59 via the idle gear 58 and the clutch hook 65, so that the loading cam plate 68 which is engaged with the cam plate drive hook 59 and the rack 69 or fourth
The loading operation 71 is started by moving to the left in the figure.

That is, when the cam groove 70 and the loading row 572 engage with each other or change from the upper horizontal portion 70a to the inclined portion 70b, the vertical moving body 71 and the holder 40 begin to descend. When the holder 40 reaches the lowering end where it comes into contact with a stopper (not shown), the vertical moving body 71 continues to descend further, and its pad 76 enters the pad entry hole 16 of the jacket 1. Then, the pad mounting body 75 comes into contact with a stopper (not shown) at a predetermined position, and the pad mounting body 7
5 and pad 76 stop descending. Vertical moving body 7]
After descending rapidly, the loading roller 72 reaches the lower horizontal portion 70C of the cam and stops. As a result, the bat attachment body 75 is biased and held by the spring 77 against a not-shown strike member. Loading is completed by the above operations,
Huff] 3 of the magnetic recording medium 10 is mounted on a spindle motor.

Ascending is performed by reversing the above operation, that is, by rotating the drive motor 46 in the opposite direction.

Note that the present invention does not limit the loading mechanism that drives the vertically movable body 7V and the support holder 40 in a direction perpendicular to the plane direction of the magnetic recording medium, and the above is just an example.

"Effects of the Invention" As described above, the horizontal retraction mechanism of the magnetic recording medium loading device of the present invention automatically retracts the magnetic recording medium using the insertion crosspiece sensor or this as a crosspiece when the leading end of the magnetic recording medium is inserted into the holder. The retraction operation of the magnetic recording medium is performed by the roller, and when the insertion is completed, the loading mechanism of the holder is activated by the action of the retraction completion detection roller, compared to when the operator manually inserts the magnetic recording medium. , the operation becomes simple,
No more malfunctions. In particular, there is no need to worry about the inconvenience caused by shifting to the holder loading operation even though the insertion of the magnetic recording medium is not completed, such as damage to the 5Fit recording medium or accidents during recording and reproduction.

[Brief explanation of the drawing]

FIG. 1 is a side view of the roller head portion when the leading end of the magnetic recording medium is inserted, showing an example of the horizontal retraction mechanism of the magnetic recording medium loading device of the present invention; FIG. 2 is a side view during the retraction operation; Fig. 3 is a plan view of the same, Figs. 4 and 5 are side views 3 of the main part showing the state before and when the tip is inserted, respectively, and Fig. 6 is an example of a conventional loading 90,000. FIG. 7 is a perspective view of the blade shown in FIG. ]0... Magnetic recording medium, 11... Jacket, ]2
...-Magnetic disk, 13... Hub, 40... Holder, 42... Fixed frame, 43... Roller drive shaft, 44
...Cam plate drive shaft, 45...Drive gear, 46...
Drive motor, 48... Roller drive shaft, 49... Stopper hole, 50... Retraction roller, 55... Insertion detection roller (insertion detection sensor), 56... Retraction switch, 5
9... Cam plate drive gear, 61... Back angle lever, 64... Retraction completion detection roller (retraction completion sensor),
65...Clutch gear, 68...Loading cam plate, 69...Rack, 70...Cam groove, 71...
Vertical moving body, 72...-Roady Groller. Figure 1 Figure 2

Claims (1)

[Claims] (1) In a magnetic recording medium loading device that includes a holder for inserting and removing a magnetic recording medium containing a magnetic disk stored in a jacket, and a loading mechanism for moving this holder toward a drive motor, the holder is in an unloading position. There is an insertion detection sensor near the holder that detects that the leading end of the magnetic recording medium has been inserted. a retraction roller that pulls into the
1. A horizontal retraction mechanism in a magnetic recording medium loading device, comprising a retraction completion sensor that detects when retraction is completed and operates a holder loading mechanism.